Cater for managing a large box (5)
I believe the answer is:
crate
'a large box' is the definition.
(I've seen this before)
'cater for managing' is the wordplay.
'cater' anagrams to 'CRATE'.
Though, I'm not clear how the anagram is indicated.
Can you help me to learn more?
(Other definitions for crate that I've seen before include "Car that will hardly go" , "Trace to a large container" , "Box for shipping" , "heap" , "Packing case with wooden slats" .)